Answer:
The vertical colloumns in the periodic table, they're called groups/families because of similar chemical behavior
The organisms in an ecosystem that will likely be affected by a flood would be A. producers, consumers and decomposers.
Overpopulation , because it’s overpopulated with stuff that’s already there
D) El Nino because EL Nina is the cooling of the water.Photosynthesis is to do with plants and Tsunami is a storm
They are prokyartic cells